This AI website demo is very unappealing and does a good job showing how bad the user experience could end up, but I think there is a place for ADs in AI that I would very much welcome. But it would be different than you would expect.

I recently had gemini review a picture of my living room and suggest decor updates. It did a great job and generated some very appealing mockups. I then asked AI where I could find the pieces it recommended. It couldn't tell me and I am not sure they even could be found.

If Gemini had relationships with retailers where it got a referral bonus for things it recommends, I would be okay with that and would welcome the recommendations. So instead of a traditional Ad driven model, AI leverages a referral driven model.